#include "config.h"

#include <stdlib.h>

#include <stdio.h>

#include <unistd.h>

#include <pwd.h>

#include <sys/types.h>

#include <security/pam_appl.h>

static int

test_conv (int num_msg UNUSED, const struct pam_message **msgm UNUSED,

	   struct pam_response **response UNUSED, void *appdata_ptr UNUSED)

{

    return 0;

}

static struct pam_conv conv = {

    test_conv,

    NULL

};

int main(void)

{

    char *user;

    pam_handle_t *pamh;

    struct passwd *pw;

    uid_t uid;

    int res;

    uid = geteuid();

    pw = getpwuid(uid);

    if (pw) {

	user = pw->pw_name;

    } else {

	fprintf(stderr, "Invalid userid: %lu\n", (unsigned long) uid);

	exit(1);

    }

    pam_start("vpass", user, &conv, &pamh);

    pam_set_item(pamh, PAM_TTY, "/dev/tty");

    if ((res = pam_authenticate(pamh, 0)) != PAM_SUCCESS) {

	fprintf(stderr, "Oops: %s\n", pam_strerror(pamh, res));

	exit(1);

    }

    pam_end(pamh, res);

    exit(0);

}